Blindstitch sewing-machine.



H. H; & J. E. FEFEL. BLINDSTITGH SEWING MACHINE. APPLICATION FILED MAY 17, 1904.

976,256.. Patented Nov. 22, 1910.

5 SHEETS-SHEET 1.

H. H. & J. E. FEFEL. BLINDSTITGH SEWING MACHINE. APPLICATION FILED MAY 17, 1904.

976,256, Patented Nov. 22, 1910.

5 BHEETSSHEET 2.

20 j I 5 I %1 I" .93 l 56 W1 I I ,I r

0 0 I o 7 10 56' [I Q v 1 1 76 2'5 0 a; 4 5 50 4.9

I 64 2/ 3 25' C74 6? 9 35 J H. H. & J. E. FEFEL. BLINDSTITGH SEWING MAGHINE.

APPLICATION FILED MAY 17,1904.

Patented N0v.22, 1910.

5 SHEETB-8HEET 3.

wi tmaooeo H. H. & J. E. FEPEL. BLINDSTITGH SEWING MACHINE.

APPLICATION FILED MAY 17, 1904.

Patented Nov. 22, 1910.

5 SHEETS-SHEET 4.

H. H. & J. E. FEFEL. BLINDSTITCH SEWING MACHINE.

APPLICATION FILED MAY 17,1904.

5 SHEETS-SHEET 6.

Patented Nov. 22, 1910.

HE1\TRY H. IEEFEL- AND JOHN E." 'FEFEL, on NEW YonK, 1v. Y., ASSIGNORS T WM.

D. ELGER, OF NEW YORK, N. Y.

BLINDSTITCH EWING-MACHINE.

- T0 all whom it may concern:

Be it known that we, HENRY H. FEFEL and JOHN .E. FEF'E of New York, in the county of New York and State of New York,

have invented certain new and useful Improvements in Blindstitch Sewing=Machines, of which the-following is a Specification.

e Our invention relates to sewing-machines,

and particularly to the type. of sewing' machines capable of making blind-stitch seams.

An object of our inventionis to provide a sewing-machine capable of making an overedge blind-stitch. 4 i

Another object is to provide a blind-stitch sewingmachine by means of which blindstitching can be done upon all kinds of goods v or fabric, including the finest as well as the heaviest.

Another object of our invention'is to provide a blind-stitch sewing-machine by means of which the blind-stitch can be placed in work of varying thicknesses without any'alteration, modification or adjustment of; the;

parts.

Other objects of our invention are involved in theparts, features, combinations of el ements and mechanisms hereinafter described i and claimed. p

In the drawings, Figure 1 is afront elevation of our improved I sewingmachine,

parts of the frame thereof being 'broken away in order to show the driving or actuat- I porting crank-armr vtional view illustrat1ng-thed1v1ded -presser- 5- ing mechanism; .Fig; .2 is an end elevation of the machine of Fig. 1; Fig. 3 is a hori-- zontal sectional view taken in a plane just above the stitch-forming mechanlsmjFig. 4 is a vertical-sectional view. taken just in advance of the looper actuating eccentrics and showing the looper mechanismin elevation; Fig. 5 is a sectional view showing a detail of the looperactuating mechanism; Figs. 6 and 7 are detailviews i-llustrating the adjustable spline connection of'the. rocking arm with the looper-rod; Fi 8 'is a detail front elevation of the adjusta le looper-sup- Fig. 9 is a detail secfoot mechanism, the yielding throat-plate,

Specification of Letters Patent. Patented Ngv, 22, 19M), Application filed May 17, 1904. SerialNo. 208,350. 7 l I and the feed-dog; Figrl'O .is a plan view of a portion of the work-supporting arm, showmg the throat-plate and adjacent parts;

Fig. 11 is aperspective view of the rigid portion of the divided presser-foot mechanism;

Fig. 12 is an enlarged detail perspective view of the looper, its supporting crank being in section; F igs; 13, 14, 15, and16 are diagrammatic views illustratin cessive steps in the formation 0? a stitch in ourmachine; Fig. 17 is a perspective view of the work and stitch, a strip of the work being shown, and a section ofthe strip being removed in order to show clearly the run of the thread for making the blind chain-stitch, according to our invention.

Primarily, it should be understood that our machine makes a blind, overedge chainstitch, and manipulates thezwork in such manner that-the needle is enabled to enter and emerge from-- the work on the same side, and thus passes its thread through the work so that it will not show onthe other side. This is highly essential'in'connection with light and thin goods wherein seams have to be sewed and hems have to be turned and stitched to the body fabric without hav- 'ing the thread show on the 'face thereof;

and in this connection it h'as'been "found difficult to sew,'"with a blind-stitch, varying thicknesses of work, such as may occur at cross-seams, owing tothe fact that it is difficult to present the work to the stitch-forming mechanism in such manner that the needle V will invariably enga e the work at the same distance from the si are being laid. Our invention obviates all the diflicul'tiesin this connection, enables the stitch-forming mechanism to a ply the stitch uniformly to the work regar lessof varying thicknesses of the latter which may pass through the machine, and hence enables 'our' machine to work on thin fabrics, sew the hems at the bottom of trousers and accom plish other work of like difiicult character. The sewing-machine head 1 has a horizon: tally extending cylindrical work-supporting horn 2 and an overhanging arm 3. Suitably mounted in the arm 3 is the main shaft .3 for actuating'the needle and loopermechanisms presently to be explained.

' 4. is a vertically reciprocatingneedle-bar operating rod, 'working in bearin in the arm 3 and actuated by a crankisk- 5 securedto the main-shaft of the. machine, and

e on whichthe stitches I r any suitable construction an connected by link 6 with a block 7 adjustably secured to the rod 4. A link 8 is pivoted to the block 7 and to one arm of a bell-crank lever 9 journaled at 10 upon the bracket 11 rigidly secured to and projecting from the head of the arm 3. The other arm be of the ordinary eye-pointed character.

'A thread-guide 18 is mounted upon the outer end of the needle-bar 15.

19 is the spool supporting rod.

20,- 21, 22 and 23, see Fig. 2, are needleguides, and 24 is a tension device. thread passes from the spool, through said needle-guides and tension device to the needle, in the usual manner.

The upper face of the work-supporting born 2, at its outer.end,'is cut away at 25 to receive a curved throat-plate or worksupport 26, which is journaled or pivoted at 27 to the end ofthe horn 2, the heel orportion 28, being engaged'by a leaf-spring 29 for yieldingly' supporting the throat-plate-or' work-support in normal operative position. The throatlate 26 is slotted'at 26 to allow the serrate feeddog '30 to project up into engagement with the under surfaceof the cloth-which is to be operated upon=andfed over the horn; This feed-do 30 may be of g is not shown in detail in the accompanying drawings, and it-being only essential that the feed be of the type-which has a forward feeding motion in engagement with the cloth and'a' return or inoperative motion disengaged from the cloth, being thus of the fourmotion type. The throat-plate 26 is also formed with a narrow slot 26 extend ing forwardly from and incontinuation of the main slot 26, and projecting up through this slot 26 isthe ridge or foldforming rib 35, which is ofthe angular .shap: shown inFiga-Z', is pivoted-upon the ,-supporting horn at 36, is formed with wor a-downwardly projecting stem 37 which ex- ,tends'througlrza' guide opening 38 in the horn, is surrounded by a sustaining spring 39, and is held'in' the desired adjusted posiof reciprocation'of the needle so-as-to efi'e'ctivelysupport a'ridge or fold ofthe'material in .the path" ofmovement 'of'the needle.

The presser-footmechanism comprises two principal 'parts which are separated'in the vertical plane of the path of the needle. The forward, or front, portion consists of a The be regulated.

plate having anupwardly curved portion 45 formed with an elongated slot 46 and a laterally projecting wing 47. The plate is also formed with a flange 48, by which it may be secured to a rod 49, adjnstably mounted in the bearings 50, of the bracket 11, which bearings are formed in extension of the needle-bar bearings. By this means the curved, or grooved, portion 45 is supported directly over the rib 35, and has the function of forcing and confining the work upon the rib, which, in turn, hows the work vertically. Thus coiiperating, the rib 35 and grooved portion 45 of the plate form a fold in the work and present the latter to the needle so that it will enter the work and emerge therefrom on the same side and without penetrating to the other side, thus enabling a blind-stitch to be formed, or one whereof the strands, threads orloops appear on but one side of the work. By thus supporting, manipulating and presenting the work, the needle is caused to enter the latter and emerge therefrom always at a uniform distance from the surface; and by rendering the rib adjustable, as described, the fold and the presentation thereof tot-he needle can .Moreover, by making the grooved plate adjustable, viz., in the direc-.

tion of the length of its supporting rod 49 c and around the axis of the latter,it can be properly positioned relatively to, or centered and alined with, the rib 35 and its front portion adjusted relatively to the rib so as to properly confine the work on the latter irrespective of its thickness. The wing-47 of the plate, confines the Work on the right of the line ofstitching and thus properly controls the work during its passage, or while it is being fed, overthe worksupporting horn. Furthermore, and in conjunction with the rib and plate to perform the described functions, the operation of the spring-controlled throat-plate, or work-support, is important; for, irrespective of the kind of work being operated upon,-Varying thicknesses are often presented to the needle, suchas in cross-sean1s, or hemmed-work. Hence,,to enablethe needle to always enter and emerge from the work at a uniform dislimit the extent to which the work may be moved relatively to the working plane ofthe needle. The plate, with its grooved portion 45, constitutes the means according to the adjustment of its front end, for limiting, or regulating, the position of the work rela-' tivelyto the plane, or path, of reciprocation of the needle; and, should a cross-seam, or other thickened portion, of the work, present itself for passage between the plate and rib, the latter" and the throat-plate will readily yield, orbe depressed, to the desired tance from the surface, it is necessary to extent for the veasy passage of-the work, but

without losing their control of the work,

the rib for holding the latter properly against the grooved portion of the plate for engagement of the needle, and the throatplate for properly supporting the work at the end of the horn. always pass freely over the horn, will never crowd at or about the stitching point nor drag on the feed-dog, and will always be presented properly and uniformly to the stitch-forming, mechanism. The elongated slot 46, provides a sight-hole for viewing and watching the work and enables the various adjustments to be made accurately and with great facility.

The rear portion of the presser-foot mechanism consists of a lever 53, formed, at one end, with a bifurcated plate, one arm '51 of i which extends above the throat-plate and tending fromthe rear of the head of thesubstantially in line with the curved portion of the other resser-plate, while the other arm 52 extends at one side over the horn 2 and substantially in line with the wing 47 on the right of the line of stitching. The bifurcated plate is formed on, or integral with,

the lever 5.3 and is vertically off-set therefrom by a curved portion, as shown in Fig. 9. The leveris-pivoted on the bracket 55, 'eX- overhanging arm 3, and thus extending at substantially a right-angle to the bracket 11 which supports the needle-bar and the other portion of the presser-foot mechanism.

The pin or screw 54 mounted in the bracket 55 forms the pivotal support for lever. 53; and'a spring 56 connects the rear end of the lever53 with an adjustable screw 56?, see Fig. 2, for the purpose of giving the A presser-plate -5152 a yielding downward pressure. A cam-lever 57 is journaled upon the bracket 55 in posit-ion to engage the rear endof the lever 53, so as to raise the presserplate 5152 from the material when .itis desired to insert or remove work. It will now be seen that this portion of the presserfoot mechanism is formed and disposed to have the following functions: The lever 53 is so mounted and disposed thatits presserplate may be lifted bodily thenece'ssary distance for the insertionand removal of the work, by turning the cam-lever 57; andwhen said plate is in contact with thew'ork,

it yieldingly holds the same against the I (throat-plate, horn, and-feed-dog, which latter is thus enabled to engage and feed the work over the horn and rib. Obviously, as

varying thicknesses of work pass between r the feed-dog and plate 51 52, the 'latter' will yleld and yet properly hold the work in .otiperates with the feed and, being in linem the direction of feed, with the rib and groovedplate, holdsv the work down in Thus, the work can so as to afford room for the operation of the looper'which, in its'forward stroke, must move close enough to the presser-plate to cooperate with the needle and take a loop LhGI'QfIOID.

The bracket 55 is formed with the later illy projecting perforated bearings 60 in which is mounted the looper-rod 61. This rod is formed for a portion of its length, see Figs; 2 and 6, with a longitudinally extending spline 62 with which engages'the longitudinally split-sleeve 63, see, Figs. 6 and 7,

adjustably confined in the forward one of the bearings 60, bymeans of a collar 64 and the hub of a crank-arm 65 both of which are clamped to said sleeve 63. The splitsleeve 63 also affords a bushing for said bearing 60 and is oscillated therein by the crankarm 65 to cause the looper-rod 61 to oscillate. The collar 64 has a set-screw Ge -passing therethrough and which engages the split-sleeve 63 for adjusting it longitudinally uponthe splined portion of the looperrod 61; and the hub of the crank-arm 65 is provided with asimilar set-screw 65 passing therethrough for engaging thesplitsleeve 63 for the same purpose and for properlyvlocating said crank-arm. Obviously,

this connection permits the looper-rod to have longitudinal movement in its bearings and affords a strong and compact means for rocking the same.- A. bracket-arm 70-, see Fig. 2, projecting from the bracket 55 has a bearing 71 in which is journaled a rocking sleeve, or short, tubular shaft 72, see Fig. 5, to one end of which iskeyed a rock-arm 73, and to the other end of which is keyed a rock-arm 74,, these two. arms extending. at

substantially a right-angle to each other. The rock-arm 73 has universal, joint connection75 with the upper end of a link or pitman 76, which at its other end, has universal joint connection 77 with the crank-arm 65. The rock-arm 1 is connected at 78 with an eccentric strap "79, the ring 80 of which encircles the eccentric 81 on the main-shaft. ,85 is a short rock-shaft freely journaled in 'ithe rocking sleeve 72 and having keyedto its opposite ends the rock-arms 86 and.87

.which extend at an angle to each other. The rock-arm 86 has a slotted lower end 88 in which slotengages a pin or screw 89 carried by a yoke 90 which is freely journaled upon the looper-rod 61 and is confined from longitudinal movement thereon by means of a 102 .in which the shank or stem 103 of the regulate the extent of the forward projeclooper 104 is adjustably secured by means of a set-screw 105. The looper body 104 is formed, at its forward end, into the eXtend ed loop-engaging prong 104, a short loop spreading finger or heel 104 and a needle receiving and guiding groove or throat 104 The loop-engaging prong is given the proper form by tapering or inclining'its' top edge from the plane of the top of the looper body to the plane of the bottom of said body, thus producing an acute-angle the vertex of which lies int-he plane of'the bottom of the looper and constitutes the loop engaging point. The back of the prong 104 is also rounded or given a slight curve toward itsface, 0r left side, which latter is also slightly curved or hollowed, thus giving the loop taking prong substantially a wedge form to properly expand the needle-loop. By properly scoringthe top the throat 104 a thread-retaining notch or' shoulder 104 is formed; and a notch for a similar purpose is formed in the heel orfinger 104".

It will now be seen that we have provided a looper capable of properly cotiperating with the needle and with the presser-foot mechanism, in a manner to perform the several important functions presently to be noted; that the looper can'be adjusted axiallyand lon itudinally in its crank-arm 100, to accurate y position .its loop-engaging prong relatively to the needle; that the crank-arm 100 can be adjusted on the looperrod 61, circumferentially and longitudinally, to enable said arm to be properly disposed so as not to interfere with ad acent parts of and reciprothe machine during the rocking and also to eating movements of said rod,

tion of the looper and the zone of its rocking movement; that the looper actuating mechanism is driven f'rom the forward en of the main-shaft by two simple and smoothly acting eccentrics which impart the requisite movements" without noise. or jar; that the loopereactuating mechanism consists of a simple, "short, compact andnoiseless train of elements,.the movements of which are short and produce little or no; vibration of the machine frame.

The general operation of the machine-will edge of the prong 104, near now be clear with the following description: The rotation of the main-shaft will cause the feed-dog, in the forward 'end of the horn 2, to have the usual four motions to engage feed and release the work and return to starting position; and will also reciprocate a need e-bar longitudinally of the horn 2, and at a right-angle to the direction of feed and path'of reciprocation of the looper by means of the crank-disk, links 6 and 8, and bell-crank 9. The eccentric 95 actuates the strap 93, which rocks the short arm 85, by arm 87, the shaft in turn rocking arm 86, which imparts longitudinal movements to the looper-rod and looper; and the eccen-. tric 81 actuates the strap 79, which rocks the tubular shaft 72, by arm 74, the tubular shaft in turn rocking arm 73, which imparts,

through the pitman 76, rocking movement to the arm 65, connected to the split collar 63, which engages the spline 62 andthus 'rocks the looperrod and looper. The rocking movements of the looper are so timed with, its reciprocating movements, and the movements of the looper are so timed with the movements of the needle as to produce the blind, overedge, chain-stitch shown in Fig. 17, which will be readily understood on reference to Figs. 18 to 16, which show, e. g. the application of the stitch to a piece of hemmed work. It will be'remembered that, to insert the work in 'the machine, the presser-plate 5152 is elevated by turning the lever 57 and depressing the rear end of the lever 53; then the work is inserted between the rib 35 and the grooved presserplate 45, the tayoreadily forming the fold or ridge in the work and holding the same the proper plane for theaction of the needle.

The needle and looper will be at substantially their rear extreme, and the looper will lie with the bottom of its prong 104 close to Referring, now, to. Fig. 13 it will be seen that,'-the machine being in operation,-the needle advances andenters the single thickness of the work y, at the fold or ridge and emerges on the same side of the work in the hem, carrying its thread sufficiently far to the arms 51 and 52, and practically in the cause the same to bow or throw out a loop as the needle returns, the looper in the meantime advancing in a path on the right of the.

- line of'seam and its prong entering the loop 1, thrown out by the needle, thus preventing said loop from being withdrawn by the latter. Afterthe prong of'the looper has entered the loop, the needle recedes from--the work and the looper continues its forward movement and passes into the loop until the latter enters the notch 104 where it will be retained for a period and the looper thus elongating the loop asjshown in 1 4. As

- the looper reaches its forward extreme, it isv given a umvement, around its axis, which ger 104 Onthe continued circular move-,-

ca uses tlic same ,tg arry the loop over-the line of seam and assume in transit theposi- ,1 tion of Fig. 14.. The' '-loop being thuseloir; gated, also becomes spread, or enlarged, by

the turning of the looper around its axis so that the lowers'strand of the loop is placed in position to be engaged by the spreading fin ment of, the looper, the finger engages said strand, see Fig. 14:, which latter slips into the notch thereo the strand being thus depressed below the path of the needle and the loop expanded for the entranceof the needle. The looper completes itsturning' movement and begins to move rear'wardly,'the feed taking place at substantially the same time and carrying the angle of the loop in the line of the seam so as to retain the loop in the notch 104 of the looper and so that the loop may be; properly presented to the needle, as the same again advances, said needle entering said loop' from the top, asshown, in Fig. 15,

and'pa'ssing-thi'ough the throat 104 of the looper. The looper, continuing its back'- ward movement recedes fromthez-loo and leaves it upon the'shank of the need e, the latter continuing its forward movement and passing through the workand throwing out another loop as before, see Fig. 16. The

-looper, meantime, has reached 1ts rear extreme, rockedfback over .the line of seam, and again'advances as in Fig.l3, the previous operations continuing in theorder de- ;J'-. scribed and producing theseam of Fig. .17. It will thus be seen that we have produced a blind-stitch machine which is simple in its parts and operation, is compact and capaf'bl'. of"-"attaining high speed, will operate equally well upon'thick and thin materials 'jy- 'thout laborious or extensive adjustments will automatically adapt itself tovarying' et'ti thicknesses of work, and can be adjusted to such a 'nicetyin all-its parts asto enable it cate fabrics without skipping stitches.

'- -Having thus described our invention,-

ter's- Patent is: y s

what we claim and desire to secure by 'Let- -to operate upon the thinnest and most deli- 1..A blind-stitch sewing machine comprising a work-supporting horn and a hollow overhanging arm; a feedmg mechanism fortraversingthe work transversely over 4 the horn; s'titch-forming-unechanism, carried by the; arm, including a needle reciprocating. lengthwise of theihorn and a looperreciprotiidinally of the horn; a driving-shaft'jouv catmg; transversely and oscillating longi;

naled in'the hollow arm; eccentrics carried bythe forward end of-said shaft within the am; and connecting means from the eccen- -ing mechanism.

tries to, and for actuat g} h h T2. A blind-stitch sewing machine comprising a work-supporting horn and a hollow overhanging. arm; means for feeding the 'work transversely. overthe horn; stitchforming' mechanism, carried by the arm, in-

cluding a needle reciprocating lengthwise versely and oscillating longitudinally of the horn; means for forming the work into a ridge.or fold at the stitch-making point; a driving-shaft journaled in the hollow arm;

said shaft within the arm;'and connecting "means from .the'eccentrics to, and for actuating, the stitch-forming mechanism.

3. A blind-stitch sewing machine comprisforming mechanism, carried by 'the arm, including a needle reciprocating at an angle to the line of feed and a looper reciprocating transversely and oscillating longitudinally of the horn; means carried by the ;horn for forming the work into a-ridge or fold at the stitch-making point, a driving-shaft journaled in the hollow arm; eccentrics carried by the forward end of-said shaft .within the the line of feed, and a needle, supported to reciprocate in a right-line lengthwise of the device and the work-support; an means for actuatin the needle. I v

5. A b ind-stitch sewing mach ne comprising" stitch-forming'and feeding mechanisms a-w ork-support in whichthe feeding mechanism works and an overhanging arm by which the stitchvforming mechanism is supported; thestitch-formmg mechanism comrocking looper disposed transversely of the work-support, and a needle reciprocating longitudm'ally of said support; and means for actuating-the looper and needle, the

rotating eccentrics and connecting mechanisms between the same and the looper.

6. A blind-stitch sewing'machine comprlsing 'a stitch forming and feedin works and anover anging arm which supeccentrics carried by the forward end of .ing a work-supporting horn and a hollow. overhanging arm; means for feeding the work'- transversely over, the horn ,stitcharm; and connecting means from'the eccenas to reciprocate [substantially parallel to" support; means for reciprecatingsaid looper" 7 parallel with theridge-formlng device and r r king the same over the r1d' e-formmg looper-actuat ng mechanism including two of the horn and a looper reciprocating transprising a longitudinally reciprocating and V g me'chanism; .a work-sup cm in which the feed I. ports the istitch forming mechanism with the looper thereof extending transversely of the work-support and the needle longitudinally of the latter; means for actuating the stitchforming mechanism comprising two rot-ating eccentrics and connecting mechanisms a presser-foot mechanism comprising a fixed grooved plate, and a yielding bifurcated plate for controlling the work on opposite sides of the line of stitching; and a ridgeforming device cooperating with the fixed plate.

8. A blind-stitch sewing machine comprising stitch-forming and feeding mechanisms; a presser-foot mechanism comprising a fixed grooved plate and a yielding bifurcated plate; and a yielding ridge-forming device cooperating with the fixed plate.

9. A blind-stitch sewing machine comprising stitch-forming and feeding mechanisms; a presser-foot mechanism comprising a fixed plate and a yielding plate; a ridge-forming device cooperating with the fixed plate; and means for adjusting the fixed plate relatively to the said device.

10. A blind-stitch sewing machine comprising stitch-forming and feeding mechanisms; a rigid. work-support; and yielding mechanism, carried by said support, for forming the work into a ridge for presentation to the stitch-forming mechanism, including means for locating the ridge in the work and controlling the position thereof.

11. A blind-stitch sewing machine comprising stitch-forming and feeding mechanisms; a rigid work-support; and mechanism,-'carrie by said support, for forming the work into a ridge for presentation to the stitch-forming mechanism, including a fixed member and a yielding member, and means for locating the ridge in the work and controllin the position thereof.

12. blind-stitch sewing machine comprising stitch-forming and feeding mechanisms; and work-controlling mechanism, including a ridgeforming device, a rigid worksupport and a yielding throat-plate carried by the latter.

13. A blind-stitch sewing machine comprising stitch-forming and feeding mechanisms; and work-controlling mechanism, including a ridge-forming device, a rigid work-support, a yielding throat-plate carried by the latter, and a yielding presserplate.

14:. A blind-stitch sewing machine comprising stitch-forming and feeding mechanlsms; and work-controlling mechanism, including an adjust-able ridge-forming device, a rigid work-support,a yielding throat-plate carried by the latter, and a yielding presser- 1 plate.

' 15. A blind-stitch sewing machine comprising stitch-forming and feeding mechanisms; and work-controlling mechanism, including a ridge-forming device having a fixed part and a yielding part, means for adjusting the fixed part, and means for adjusting the yielding part.

16. A blind-stitch sewing machine comprising stitclnforming and feeding mechanisms; and a presser-foot mechanism comprising two independently mounted plates; and means for adjusting one of the plates in a direction at an angle to the other for mutualcooperation to manipulate the work during stitching.

17. A blind-stitch sewing machine comprising stitch-forming and feeding mechanisms; and a presser-foot mechanism comprising two independently mounted plates; and'means whereby one of said plates may be adjusted in two different angular directions relatively to the other for mutual cooperation to manipulate the work during stitching.

18. A blind-stitch sewing machine comprising stitch-forming and feeding mechanisms; and a presser-foot mechanism comprisin a pivoted plate and a fixed plate indepen ently mounted; means for rendering the pivoted plate yielding in its action; and means for adjusting the fixed plate.

19. A blind-stitch sewing machine comprising stitch-forming and feeding'mechanisms; a work-support; and a presser-foot mechanism comprising a fixed plate having a work-confining wing, and a yielding plate having a work-confining portion cooperating is properly controlled on one side of the line of stitching during the feeding of the same over the work-support.

20. A blind-stitch sewing machine comprising a work-support; a feeding mechapresser-foot mechanism, comprising a fixed part and a yielding part both the parts having portions controlling the work on opposite sides'of the line of seam; means for adjusting the fixed part; and means for controlling the pressure of the yielding part.

21. In a sewing machine, the combination of a work-supporting horn, feed mechanism carried thereby, suitable stitchforming mechanism, and a presser-foot mechanism comprising the rigidly mounted presserplate 45, 47' and 'a yieldingly mounted presser-plate 51, 52, said presser-plates being separated in the path of the needle, sub stantially as set forth.

22. In a sewing-machine, the combination of a work-supporting I horn, suitable feed mechanism, a'needle ope-rating transversely to the line of feed, a looper cooperating with with the wing, whereby the bulk of the worli nism; stitch-forming mechanism; and a the needle, a rigid presser-plate 45, 47, an

' 53, and a spring holding said Presser-plate 51, 52 in engagement with the-clothnpon the work-supporting, horn, substantially as set forth.

23. In a sewing machine, the combination of a work-supporting horn, having a cut-outportion 25, a curved throat-plate 26 supported in said cut-out portion and journaled at 27 a leaf-spring 28 engaging the throatplate for yieldingly supporting it in normal position, a presserfoot mechanism, and stitch-forming and feeding mechanisms, substantially as set forth.

24. In a sewing machine, the combination of a worksupporting horn, with a slotted throat-plate, a pivotally mounted ridgeforming member having a depending stem 37, a guide opening in who said stem operates, an adjustable nut working upon saidstem for regulating the amount of projection of the ridge-forming member above the throat-plate, a spring holding said ridgeforming member in its normal position, and

suitable stitch-forming and feeding mechanisms, substantially as set forth. v

25. In. a sewing machine, the combination of suitable feeding mechanism, and a needle reciprocating transversely to the line of feed, with a looper shaft, a looper sup-.

porting crank-arm adjustably mounted on the looper shaft, a looper adjustably mounted upon the, free end of the crank-arm, and means .for reciprocating and rocking the looper shaft, substantially as set forth.

26. In a sewing machine, the combination of a work-support, suitable feed mechanism and a needle and its operating mechanism, with' a longitudinally "reciprocating and rocking looper shaft having. a looper attached thereto, a, spline 'upon said looper shaft, a; split collar engaging said splined portion of the looper shaft, bearings for'the looper shaft and for .said split collar, se-

curing collars engaging the ends of, said split collar upon opposlte sides of its bearing, and means for reciprocating and rock- 1ng SQ/1d looper shaft, substantially as set forth.

27. In a sewing machine, the combination of a work-support, suitable feed mechanism, anda needle and its operating mechanism, with a longitudinally movable rocking looper shaft carrying a looper, concentrically mounted rocking sleeve and shaft, the shaft being journaled within the sleeve,

' a suitable support for the sleeve, rock arms upon said rock shaft and rock sleeve suitably connected with the looper shaft for reciprocating and rocking it, and operating mechanisms fei' independently rocking-said concentric shaftand sleeve, substantially as set forth.

28; In a sewing machine, the combination "of a rigid work-support having a yielding ridge extending in the line of feed,

extending inthe line of feed, a needle w or king across the ridge, a longitudinally reciprocating looper working across the. lineof the needle alongside of the ridge, means for actuating the needle and looper for c'o:'

operative action, and means for causing the ridge to automatically vary its position according to the thickness of the work passing thereover.

. 30. In a sewing machine, the combination of a rigid work-support having a ridge extending in the line of feed, a needle working. across the ridge, and a longitudinally reciprocating looper working across the line of the needle alongside of the ridge, means for actuating the needle and looper for cooperative action, andmeans for placing a limit upon the movement of the. work toward the needle whereby, irrespective of the thickness of the work, the needle will penetrate the latter at a uniform distance from its top surface.

31. The combination of a rigid work-support; a yielding ridge carried by said sup port and extending in the line of feed; a needle working across the ridge; and a longitudinally reciprocating looper 'working across the line of the needle alongside of the ridge; said needle and looper being adjustable relatively, substantially as described.

32. -In a sewing machine, the combination of a rigid work-support having a yielding ridgeextending in the line of feed, a needle working across the ridge, a looper reciprocating across the line of the needle alongside of the ridge, and means for actuating the needle and looper to'cause the same to form the stitch, substantially as described.

33. In a sewing machine, a rigid worksupport having a yielding ridge and an adjacent work-supporting portion, an overhanging arm, stitch-forming mechanism supported by and movable relatively to said overhanging arm, the. stitch-forming mechanism including a needle movable across the ridge and a ongitudinally reciprocating looper arranged to work across the line of the needle and alongside the ridge.

34. The combination of yielding mechanism for creasing the work; rigid work-supporting means for carrying said creasing mechanism; and stitch-forming mechanism supported above the work-support and 'comprising two cooperating thread-manipulating elements, one to work across the crease forpenetrating the work and the other to reciprocate beslde the crease.

35. In a sewing machine, a yielding-creasing mechanism for the work, rigid means carrying the creasing mechanism for supporting the free portion of the Work, and presser-foot and stitching mechanism sup ported above the work, the stitching mechanism including two reciprocating threadma-nipulating members, one movable through the crease and the other alongside of the crease.

36. In a sewing machine, a rigid worksupport having a yielding ridge, an overhanging arm, a needle-carrying bar mounted on the end of said overhanging arm and arranged to reciprocate across' the ridge" of the work-support, a presscr-foot mechanism r carried by said overhanging arm and adapted to hold the work in place on the worksupport, a looper mounted at the end of the overhanging'arm and arranged to reciprocate alongside of said ridge, and means for actuating the needle and looper to cause them to manipulate the thread and make the stitch, substantially as described.

37. In a sewing machine, a rigid worksupport having a ridge yieldingly mounted thereon, an overhanging arm, a needle mounted at the end of the overhanging arm and arranged to reciprocate across the ridge, 'a resser-foot mechanism carried by said overhanging arm, a looper mounted atthe end of the overhanging arm and arranged to reciprocate alongside of said ridge, and

means for actuating the needle and looper to manipulate the thread and produce the stitch, substantially as described.

38. In a sewing machine, a rigid worksupport having a yielding ridge, an overhanging arm, a needle and a looper suported by said arm and reciprocating longitudinally, respectively, across and alongside said ridge, a presser-foot mechanism yield-- ingly supported and adapted to hold the work in place on the work-support, and

means for actuating the needle and looper-to manipulate the thread and form the stitch, substantially as described.

39. In a sewing machine, and in combination with a rigid work-support having "a yielding ridge, a needle and a looper op-.,

erating respectively across and parallel with the ridge, and mechanism for actuating said needle and looper to cause the same to have the movements stated and to manipulate the thread to form the stitch, substantially as described.

40. In a sewing machine, the combination for moving the looper anism for operating said looper-rod to cause the same to have a forward longitudinal movement to carry the looper forward above the work at one side of the line of stitches to take a loop from: the needle above the work,

then an axial or rocking movementto carry the looper-across the line of stitches to the other'side thereof, and then a longitudinal receding or rearward movement above the work to enable the looper to present the loop to the needle, and then a-second axial or rocking movement to carry the looper again across the line of stitches to its first position, from which it may again move forward to take another loop, substantially as set forth.

41. In a sewing machine, a rigid worksupport having a yielding ridge-forming device, a reciprocatory needle passing transversely-to the path of the line of feed, feeding mechanism and means for actuating the needle and feeding mechanism, combined with the looperq'od, the looper eccentrically set with reference to the looper-rod and having a forwardly projecting portion, a prong and a finger each of which is rovided with across-to the other side of the line of sewing, 105- then rearwardly, and then across the line of sewing in rear of the needle to its first position, substantially as set forth.

42.) In a sewing machine, a rigid work-.

support having a yielding ridge-forming device, a reciprocating needle passing transversely to the line of feed, a -presser-foot, a feeding mechanism, and means for actuating the needle and feed mechanism, combined with the looper-rod, the looper carried by said rod-and arranged above the work-support; and presser-foot,-said looperhaving the forwardly projecting-n ortion, and means orward' along one side of the line of sewing above the work to take the loop from: the needle," then axially across to the other side of the'lin'e of sewing above the work, then rearwardly, and then across the line of sewing in rear of the needle to its first position, substantially as set forth;-

43. In a sewingYmachine, the combination with the cloth-platehaving a rigid work-support provided with a yielding ridge-formin device, of feeding mechanism, needle arrange to reciprocate above the cloth-plate transversely to the line of feed, a stationary bearing, a looper shaft mounted to oscillate in the bearing and also held by the latter to reciprocate in a fixed plane in parallelism to the cloth-plate, said shaft carrying at one end an eccentrically supported looper, and

means for actuating the looper shaft to cause the'looper to reciprocate in straight lines respectively on opposite sides of the line of 10 stitching, and means for rocking the looper HENRY H. FEFEL. JOHN E. FEFEL.-

WVitnesses:

A. STETsoN, G. H. ADAMS. 

